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Hi Doug,

   Thank you very much for your reply. I don't have any codes, so no any
special codes as well.
   Only thing I did is that:
   1, use devstack to install a fresh openstack env, all are ok.
   2, import neutron-vpnaas directory (no any my own codes) into eclipse as
pydev project, for example, run unit test
(neutron_vpnaas.tests.unit.services.vpn.test_vpn_service ) in eclipse, it
throws the following exception.
   3, but this unit test can be run well in bash, see
http://paste.openstack.org/show/172016/
   4, this unit test can also be run well in eclipse as long as I edit
neutron/openstack/common/policy.py file to change oslo.config into
oslo_config.


======================================================================
ERROR: test_add_nat_rule
(neutron_vpnaas.tests.unit.services.vpn.test_vpn_service.TestVPNDeviceDriverCallsToService)
neutron_vpnaas.tests.unit.services.vpn.test_vpn_service.TestVPNDeviceDriverCallsToService.test_add_nat_rule
----------------------------------------------------------------------
_StringException: Traceback (most recent call last):
  File
"/bak/openstack/neutron-vpnaas/neutron_vpnaas/tests/unit/services/vpn/test_vpn_service.py",
line 98, in setUp
    super(TestVPNDeviceDriverCallsToService, self).setUp()
  File
"/bak/openstack/neutron-vpnaas/neutron_vpnaas/tests/unit/services/vpn/test_vpn_service.py",
line 53, in setUp
    super(VPNBaseTestCase, self).setUp()
  File "/bak/openstack/neutron-vpnaas/neutron_vpnaas/tests/base.py", line
36, in setUp
    override_nvalues()
  File "/bak/openstack/neutron-vpnaas/neutron_vpnaas/tests/base.py", line
30, in override_nvalues
    cfg.CONF.set_override('policy_file', neutron_policy)
  File "/usr/local/lib/python2.7/dist-packages/oslo_config/cfg.py", line
1679, in __inner
    result = f(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo_config/cfg.py", line
1949, in set_override
    opt_info = self._get_opt_info(name, group)
  File "/usr/local/lib/python2.7/dist-packages/oslo_config/cfg.py", line
2262, in _get_opt_info
    raise NoSuchOptError(opt_name, group)
NoSuchOptError: no such option: policy_file

On Tue, Feb 10, 2015 at 10:38 PM, Doug Hellmann <doug at doughellmann.com>
wrote:

>
>
> On Tue, Feb 10, 2015, at 04:29 AM, Joshua Zhang wrote:
> > Hi Stacker,
> >    A question about oslo.config, maybe a very silly question. but pls
> >    tell
> > me if you know, thanks in advance.
> >
> >    I know oslo has removed 'olso' namespace, oslo.config has been changed
> > to oslo_config, it also retains backwards compat.
> >
> >    I found I can run openstack successfully, but as long as I run
> >    something
> > in eclipse/pydev it always said like 'NoSuchOptError: no such option:
> > policy_file'. I can change 'oslo.config' to 'oslo_config' in
> > neutron/openstack/common/policy.py temporarily to bypass this problem
> > when
> > I want to debug something in eclipse. But I want to know why? who can
> > help
> > me to explain ? thanks.
>
> It sounds like you have code in one module using an option defined
> somewhere else and relying on import ordering to cause that option to be
> defined. The import_opt() method of the ConfigOpts class is meant to
> help make these cross-module option dependencies explicit [1]. If you
> provide a more detailed traceback I may be able to give more specific
> advice about where changes are needed.
>
> Doug
>
> [1]
>
> http://docs.openstack.org/developer/oslo.config/configopts.html?highlight=import_opt#oslo_config.cfg.ConfigOpts.import_opt
>
> >
> >
> > --
> > Best Regards
> > Zhang Hua(张华）
> > Software Engineer | Canonical
> > IRC:  zhhuabj
> >
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-- 
Best Regards
Zhang Hua(张华）
Software Engineer | Canonical
IRC:  zhhuabj
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